Feed-water heater and purifier



(No Model-z) E. HOLTHAUSE.

FEED WATER HEATER AND PURIFIER.

No. 406,282. Patented July 2, 1889.

UNITED STATES PATENT OFFICE.

EMIL HOLTHAUSE, OF BROOKLYN, NEW YORK.

FEED-WATER H EATER AND PU RI Fl ER.

SPECIFICATION forming part of Letters Patent No. 406,282, dated July 2,1889. Application filed March 23, 1889. Serial No. 304,566. (No model.)

' specification and the accompanying drawings,

forming a part of the same.

This invention is applicable particularly to horizontal boilers havingreturn-flues, and the object of the invention is to furnish a simple andeffective means of heating and purifying the feed-Water of the boiler,and the operation of which may be discontinued when desired.

The invention consists, first, in the combination, with the boiler andits casings, of a vertical flat coil of pipes connected with thefeed-supply and arranged in the uptake-flue at the rear end of theboiler, and a non-conducting envelope or shield suspended above the samethrough the boilercasing and adapted when lowered to inclose the saidcoil of pipes to shield them from the heat.

It also consists in the combination, with the same parts, of a mud-drumconnected with the bottom of the said coil, a filter connected with saidmud-drum, and suitable means for cut-ting off the feed-water from thecoil and lowering the shield over the coil when it is desired todiscontinue its use.

In the annexed drawings, Figure 1 is an elevation of the boiler havingmy improt'ement, with its casings in section. Fig. 2 is an end elevationof the same with the boilercasing removed to disclose more fully theconstruction and arrangements of tle parts, and Fig. 3 is a horizontalsection of the envelope on a larger scale.

A is the boiler; 13, the metallic boiler-front used to sustain the frontend of the boiler; O, the bridge-wall; D, the grates; E, the uptake atthe rear of the boiler, and I the boilerflues adapted to conduct theflame and smoke to the front end of the boiler, whence they would beconducted to the chimney by a suitable breeching. The pipe-coil consistsin a continuous series of pipes f, arranged over one another andconnected by return-bends g in such manner as to drain freely from thetop to the bottom, and thus prevent the collection of sediment therein.

h is the water-supply pipe; j, a branch of the same extendedhorizontally over the uptake E to the filter k. The filter is shownprovided above the entering pipe j with pervious diaphragms q andgranular filling 'r', and the outlet-pipe is carried from the top of thegranular filling; but the constructive features of the filter are whollyimmaterial.

i is a vertical branch from the pipe j to the top of the coil. I

The boiler-casing F is shown as a wall with an aperture G over the coilto permit the passage of a shields, for the purpose set forth. Thebrick-work above the coil is shown supported by a metal plate H; but acasing of any other suitable construction may be used. The lower endof-the coil is connected with a mud-drum m, and the latter is connectedby a Vertical pipe m to the branch j. The pipes'i and m are arrangedVertically in line with the ends of the coil to facilitate theapplication of the shield tothe coil and the movement of the samevertically through the boiler-casing to expose the coil to the heat-whendesired. Cocks Zand Z are inserted in the pipes 'i and j, and a cook 11in the pipe 172'.

A delivery-pipe 0 is extended from the filter to the lower part of theboiler and provided with a check-valve o, and the Water may be caused topass through the coil and the muddrum before entering the filter byclosing the cock Z and opening the cocks Z and n, or the water may passto the boiler without traversing the coil by opening the cock Z andclosing the cooks Z and n. The flame moving through the uptake E passesbetween and around the pipes of the coil, and thus heats them in a highdegree, and when the water is passed through the same its impurities areprecipitated and are in a great measure deposited in the mud-drum. Thefilter and muddrum are both provided with pipes 'p and cooks p towithdraw the sediment at intervals.

lVhen the boiler requires no feed-water, it is obvious that thecirculation would need to be cutoff from the coil, and its contentswould therefore soon become converted into steam and the joints of thepipe would be injured. To protect the coil at such times, I provide thehollow shield, consisting in the inner jacket 8 and the outer jacket 3,provided ICO with intermediate space If, having a bottom extendingbetween such jackets, which would be filled with ashes, plaster, orother non-conducting and non-combustible material. The inner jacket isshaped to loosely embrace the vertical pipes .t' and m (which are shownin dotted lines in Fig. 3) and to slide vertically over such pipes andover the coil-pipes f and their return-bends g. The outer jacket is madeof similar shape, but large enough to form the intermediate space if,and each jacket is preferably formed of two halves provided withflanges'u, clamped upon an intermediate plate 1 by bolts v,by whichconstruction the shield is cheaply made and is rendered firm and rigid.Hooks a are attached to the top of the shield, and cords bare connectedtherewith and are carried over guide-pulleys a, mounted upon anysuitable supports in a con venient position. A weight 0 is attached tothe ends of the cords, sufficient to counterbalance the shield, whichmay thus be raised and lowered wit-h entire ease by moving the weight upor down. The shield is shown in full lines in Figs. 1 and 2 in itselevated position, and in dotted lines in its lower position, in whichit would be adapted to cover the coil to the bottom of the uptake E, andthus protect the coil from injury.

I am fully aware that it is not new to heat water and filter it beforeentering the boiler for the purpose of purifying it.

I am also aware that it is not new to arrange water-heating pipes in theuptake of a return-flue boiler, as in United States Patent No. 369,697,dated September 13, 1887; but in such case the coil-pipes have beenarranged upon the same level, so that the contents of one pipe would.not drain automatically to the next, as in my construction.Furthermore, in the patent referred to the horizontal tier of pipes hasbeen placed above the return-flues and covered with a layer ofnoncombustible material placed permanen tlyover the top of the coil, toprevent the hot smoke and gases from passing above such level. lVith ahorizontal coil thus arranged it would be difficult, if not impossible,to apply a movable shield, as in myinvention, and the verticalarrangement of my coil, and the vertical arrangement of the inlet andoutlet pip est and m' enables me not only to secure a perfect dischargeof the sediment from the pipes to a mud-drum located beneath the levelof the lowest pipe, but it enables me to apply a vertically-movingshield, which, owing to its vertical movement, may be readilycounterbalanced by a falling weight, and may thus be arranged and heldin the desired position with the utmost facility. I therefore disclaimthe said Patent No. 369,697, or the more insertion of a heating-coil in.the uptake of a boiler.

It is obvious that the pipe m may be differently arranged to permit themovement of the shield vertically over the coil, as the discharge fromthe coil is beneath the lowest point to which the bottom of the shieldwould require to be moved.

Having thus set forth my invention, what I claim herein is 1. Thecombination, with the uptake of a flue-boiler, of the coil of pipesarranged vertically above one another and having suitable inlet andoutlet pipes, and a shield movable vertically over the coil through anaperture in the boiler-casing, as and for the purpose set forth.

2. The combinatiomwith the uptake of a flue-boiler, of the coil of pipesarranged vertically above one another, the vertical pipes 1' and m,connected with the ends of the coil, the horizontal pipe 7' above thetop of the boiler, the cocks l, n, and Z, inserted in the several pipes,and a shield movable vertically over the coil and the pipes 1'- and m,as and for the purpose set forth.

The combination, with the uptake of a flue-boiler, of the coil of pipesarranged vertically above one another, the vertical pipes i and m,connected with the ends of the coil, the horizontal pipe j above the topof the boiler, the mud-drum m at the junction of the coil and the pipem, the filter 7;, connected with the pipej, and by pipe owith theboiler, the cooks Z, n, and Z, connected with the several pipes, and theshield movable vertically over the coil and the pipes 73 and m, as andfor the purpose set forth.

a. The combination, with the uptake of a flue-boiler, of the coil ofpipes arranged vertically above one another, the vertical pipes i and m,connected with the ends of the coil, the horizontal pipe 7' above thetop of the boiler, the mud-drum m at the junction of the coil, and thepipe m, the filter 70, connected with the pipe j, and by pipe 0 with theboiler, the cocks Z, n, and Z, connected with the several pipes, theshield movable vertically over the coil, as set forth, and suitablecords, pulleys, and Weight to counterbalance the same, as and for thepurpose set forth.

5. The combination, with the uptake .of a flue-boiler, of the coil ofpipes arranged verticall y above one another and having suitable inletand outlet pipes, and the shield consisting in the jackets s .9,connected together with the intermediate space If, and adapted to movevertically over the coil through an aperture in the casing, as and forthe purpose set forth.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

EMIL IIOLTIIA'USE.

W'itnesses:

THOS. CRANE, HENRY J. MILLER.

